I have a problem with epubs though. This need to support every single thing under the sun makes the pipeline exceedingly complex. All you need for a vast majority of fiction is:
- headings
- paras
- emphasis (bold/italic)
- block quotes
Add simple "image" syntax to it to display maps etc from detective stories
Basically a ruthlessly cut down version of markdown.
The mini-readers from Xteink came in at the right time for such experimentation.